Long-period Magnetotelluric time series recorded at site SH54, South Snowdonia, Wales, UK (NERC Grant NE/P017312/1)

Long-period Magnetotelluric time series recorded in Nov 2021 to Jan 2022 at site SH54, South Snowdonia, Wales, UK. Funded by NERC, grant number: NE/V002694/1 "SWIMMR Activities in Ground Effects (SAGE)". These data consist of measurements of the Earth’s natural magnetic and electric field variations.